IUBMB Enzyme Nomenclature


Accepted name: sulfoquinovosidase

Reaction: an α-sulfoquinovosyl diacylglycerol + H2O = sulfoquinovose + a 1,2-diacylglycerol

Glossary: quinovose = 6-deoxy-D-glucopyranose

Other name(s): yihQ (gene name)

Systematic name: α-sulfoquinovosyl diacylglycerol sulfoquinovohydrolase

Comments: The enzyme, characterized from the bacteria Escherichia coli and Pseudomonas putida, hydrolyses terminal non-reducing α-sulfoquinovoside residues in α-sulfoquinovosyl diacylglycerides and α-sulfoquinovosyl glycerol.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:


1. Shibuya, I. and Benson, A. A. Hydrolysis of α-sulphoquinovosides by β-galactosidase. Nature 192 (1961) 1186-1187.

2. Speciale, G., Jin, Y., Davies, G.J., Williams, S.J. and Goddard-Borger, E.D. YihQ is a sulfoquinovosidase that cleaves sulfoquinovosyl diacylglyceride sulfolipids. LID - 10.1038/nchembio.2023 [doi. Nat. Chem. Biol. (2016) . [PMID: 26878550]

[EC created 2016]

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